An introduction to the study of colour phenomena, explaining a new theory of colour based entirely on experimental facts with applications to scientific and industrial investigations (1905)
Lovibond, Joseph Williams, 1833-1918 · London, E. & F.N. Spon, Limited; New York, Spon & Chamberlain · leaf 16
bonds Theory of Colour Phenomena, 7 This is effected by placing a piece of paper, or some evenly-coloured surface, or, preferably, a slip of mirror-glass, under1)otli tubes, and slightly turning the instrument towards thelight until both fields of view are evenly ilhi.minated. Whenthis is effected,… … Fig. 5. through the other, this standard white light is then inter-cepted by the graded coloured glasses, until it corresponds incolour with the object to be measured, when the numericalcolour value of the glasses can be read off. The standard white is pure precipitated lime sulphate,pressed evenly…
Color
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